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dasjambo 08-14-2011 11:04 PM

Black oxide drill bits on metal
 
Hey there everyone, I've got an amateur question. I locked my bike with a u-lock, and now can't find the key. After searching for it for days, I'm giving up on the key. So now I need to drill through the lock. I have a DeWalt drill with black oxide drill bits--can I just take the drill to the key hole, or would that damage the bit since its metal on metal?

Giles 08-15-2011 11:36 AM

Quote:

Originally Posted by dasjambo (Post 707588)
Hey there everyone, I've got an amateur question. I locked my bike with a u-lock, and now can't find the key. After searching for it for days, I'm giving up on the key. So now I need to drill through the lock. I have a DeWalt drill with black oxide drill bits--can I just take the drill to the key hole, or would that damage the bit since its metal on metal?

I think you would be much better off to Buy--beg--borrow a grinder with metal cutting wheel (disc). It could be burned off if you had the right torch. I would suspect that all componets of the lock would be hardened steel--if it is quality.
Some cheaper Chinese locks can be sawed with hacksaw:thumbup:

WirelessG 08-15-2011 12:21 PM

I agree with Giles on the grinder. If you have to drill, put some 3 in oil on the lock before you start drilling to keep the bit cool. If the steel is hardened, you will likely dull the bit, but btwist bits are cheap.


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